<template>
  <div class="goodinfo">
    <transition @before-enter="beforeEnter" @enter="enter" @after-enter="afterEnter">
      <div class="ball" v-show="ballFlag" ref="ball"></div>
    </transition>

    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <swiper :lunbotuList="lunbotu" :isfull="false"></swiper>
        </div>
      </div>
    </div>
    <div class="mui-card">
      <div class="mui-card-header">{{goodsinfo.title}}</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <span class="price">
            市场价：
            <del>${{goodsinfo.market_price}}</del>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;销售价：
            <span
              class="now_price"
            >${{goodsinfo.sell_price}}</span>
          </span>
          <p>
            购买数量：
            <numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox>
          </p>
          <p>
            <mt-button type="primary" size="small">立即购买</mt-button>
            <mt-button type="danger" size="small" @click="addToShopCar()">加入购物车</mt-button>
          </p>
        </div>
      </div>
    </div>
    <div class="mui-card">
      <div class="mui-card-header">商品参数</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p>商品货号：{{goodsinfo.goods_no}}</p>
          <p>库存情况：{{goodsinfo.stock_quantity}}件</p>
          <p>上架时间：{{goodsinfo.add_time|dateFormat}}</p>
        </div>
      </div>
      <div class="mui-card-footer">
        <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
        <mt-button type="danger" size="large" plain @click="goComment(id)">商品评价</mt-button>
      </div>
    </div>
  </div>
</template>
<script>
import swiper from "../subcomponent/swiper.vue";
import numbox from "../subcomponent/goodsinfonunb.vue";
export default {
  data() {
    return {
      id: this.$route.params.id,
      lunbotu: [],
      goodsinfo: {},
      ballFlag: false,
      selectedCount: 1 //保存用户选中的商品数量，默认用户买一个
      // 控制小球的
    };
  },
  created() {
    this.getLunbotu();
    this.getGoodsInfo();
  },
  methods: {
    getLunbotu() {
      this.$http.get("api/getthumimages/" + this.id).then(result => {
        if (result.body.status === 0) {
          result.body.message.forEach(item => {
            item.img = item.src;
          });
          this.lunbotu = result.body.message;
        } else {
          console.log("lunbpotu");
        }
      });
    },
    getGoodsInfo() {
      //获取商品的信息
      this.$http.get("api/goods/getinfo/" + this.id).then(result => {
        if (result.body.status === 0) {
          this.goodsinfo = result.body.message[0];
        }
      });
    },
    //点击使用编程式导航
    goDesc(id) {
      this.$router.push({ name: "goodsdesc", params: { id } });
    },
    goComment(id) {
      this.$router.push({ name: "goodsComment", params: { id } });
    },
    addToShopCar() {
      // 添加
      this.ballFlag = !this.ballFlag;
      var goodsinfo = {
        id: this.id,
        count: this.selectedCount,
        price: this.goodsinfo.sell_price,
        selected: true
      };
      // 调用store 
      this.$store.commit('addToCar',goodsinfo)
    },
    beforeEnter(el) {
      el.style.transform = "translate(0,0)";
    },
    enter(el, done) {
      el.offsetWidth;
      const ballPosition = this.$refs.ball.getBoundingClientRect();
      // 获取徽标在页面中的位置
      const badgePosition = document
        .getElementById("badge")
        .getBoundingClientRect();

      const xDist = badgePosition.left - ballPosition.left;
      const yDist = badgePosition.top - ballPosition.top;
      el.style.transform = `translate(${xDist}px,${yDist}px)`;
      el.style.transition = "all 0.5s cubic-bezier(0.4,-0.3,1,.68)";
      done();
    },
    afterEnter(el) {
      this.ballFlag = !this.ballFlag;
    },
    getSelectedCount(count) {
      this.selectedCount = count;
      console.log("父组件拿到的数量值为：" + this.selectedCount);
    }
  },
  components: {
    swiper,
    numbox
  }
};
</script>

<style lang="less" scoped>
.goodinfo {
  background: #ddd;
  overflow: hidden;

  .now_price {
    color: red;
  }

  .mui-card-header,
  .mui-card-footer {
    display: block;
    button {
      margin-bottom: 10px;
    }
  }
}
.ball {
  width: 15px;
  height: 15px;
  background: red;
  position: absolute;
  z-index: 1005;
  border-radius: 50%;
  top: 380px;
  left: 152px;
}
</style>